/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 10:41:17,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 10:41:17,378 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 10:41:17,394 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 10:41:17,395 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 10:41:17,396 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 10:41:17,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 10:41:17,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 10:41:17,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 10:41:17,401 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 10:41:17,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 10:41:17,403 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 10:41:17,404 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 10:41:17,405 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 10:41:17,406 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 10:41:17,407 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 10:41:17,408 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 10:41:17,409 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 10:41:17,410 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 10:41:17,412 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 10:41:17,414 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 10:41:17,415 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 10:41:17,416 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 10:41:17,417 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 10:41:17,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 10:41:17,420 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 10:41:17,420 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 10:41:17,421 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 10:41:17,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 10:41:17,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 10:41:17,422 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 10:41:17,423 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 10:41:17,424 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 10:41:17,425 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 10:41:17,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 10:41:17,426 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 10:41:17,427 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 10:41:17,427 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 10:41:17,427 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 10:41:17,428 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 10:41:17,429 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 10:41:17,430 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 10:41:17,447 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 10:41:17,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 10:41:17,449 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 10:41:17,449 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 10:41:17,449 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 10:41:17,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 10:41:17,450 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 10:41:17,450 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 10:41:17,450 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 10:41:17,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 10:41:17,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 10:41:17,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 10:41:17,451 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 10:41:17,451 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 10:41:17,451 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 10:41:17,451 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 10:41:17,451 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 10:41:17,452 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 10:41:17,452 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 10:41:17,452 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 10:41:17,452 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 10:41:17,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 10:41:17,453 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 10:41:17,453 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 10:41:17,453 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 10:41:17,453 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 10:41:17,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:17,454 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 10:41:17,454 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 10:41:17,454 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-20 10:41:17,766 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 10:41:17,780 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 10:41:17,783 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 10:41:17,785 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 10:41:17,785 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 10:41:17,786 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product33.cil.c [2020-07-20 10:41:17,866 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad11cd32c/249cc8be236a498094a3c8ff27065182/FLAG4272cf7c4 [2020-07-20 10:41:18,356 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 10:41:18,358 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product33.cil.c [2020-07-20 10:41:18,376 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad11cd32c/249cc8be236a498094a3c8ff27065182/FLAG4272cf7c4 [2020-07-20 10:41:18,680 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad11cd32c/249cc8be236a498094a3c8ff27065182 [2020-07-20 10:41:18,689 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 10:41:18,692 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 10:41:18,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 10:41:18,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 10:41:18,698 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 10:41:18,699 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:41:18" (1/1) ... [2020-07-20 10:41:18,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7671b919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:41:18, skipping insertion in model container [2020-07-20 10:41:18,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:41:18" (1/1) ... [2020-07-20 10:41:18,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 10:41:18,778 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 10:41:19,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:41:19,254 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 10:41:19,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:41:19,359 INFO L208 MainTranslator]: Completed translation [2020-07-20 10:41:19,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:41:19 WrapperNode [2020-07-20 10:41:19,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 10:41:19,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 10:41:19,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 10:41:19,360 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 10:41:19,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:41:19" (1/1) ... [2020-07-20 10:41:19,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:41:19" (1/1) ... [2020-07-20 10:41:19,388 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:41:19" (1/1) ... [2020-07-20 10:41:19,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:41:19" (1/1) ... [2020-07-20 10:41:19,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:41:19" (1/1) ... [2020-07-20 10:41:19,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:41:19" (1/1) ... [2020-07-20 10:41:19,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:41:19" (1/1) ... [2020-07-20 10:41:19,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 10:41:19,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 10:41:19,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 10:41:19,462 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 10:41:19,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:41:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 10:41:19,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 10:41:19,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 10:41:19,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-20 10:41:19,537 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-20 10:41:19,537 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-20 10:41:19,537 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-20 10:41:19,538 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-20 10:41:19,538 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-20 10:41:19,539 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-20 10:41:19,539 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-20 10:41:19,539 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-20 10:41:19,539 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-20 10:41:19,540 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-20 10:41:19,540 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-20 10:41:19,540 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-20 10:41:19,541 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-20 10:41:19,541 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-20 10:41:19,541 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-20 10:41:19,541 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 10:41:19,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-20 10:41:19,542 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-20 10:41:19,542 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-20 10:41:19,542 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-20 10:41:19,542 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-20 10:41:19,542 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-20 10:41:19,543 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-20 10:41:19,543 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-20 10:41:19,543 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-20 10:41:19,543 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-20 10:41:19,543 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-20 10:41:19,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-20 10:41:19,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-20 10:41:19,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-20 10:41:19,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-20 10:41:19,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-20 10:41:19,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-20 10:41:19,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-07-20 10:41:19,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-07-20 10:41:19,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 10:41:19,546 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 10:41:19,546 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-20 10:41:19,546 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-20 10:41:19,546 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-20 10:41:19,546 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-20 10:41:19,546 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-20 10:41:19,546 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-20 10:41:19,547 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-20 10:41:19,547 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-20 10:41:19,547 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-20 10:41:19,547 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-20 10:41:19,548 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-20 10:41:19,548 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-20 10:41:19,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 10:41:19,548 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-20 10:41:19,548 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-20 10:41:19,548 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-20 10:41:19,548 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-20 10:41:19,549 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-20 10:41:19,549 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-07-20 10:41:19,549 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-20 10:41:19,549 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-20 10:41:19,549 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 10:41:19,550 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-20 10:41:19,550 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-20 10:41:19,550 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-20 10:41:19,550 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-20 10:41:19,550 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-07-20 10:41:19,550 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-20 10:41:19,550 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-20 10:41:19,551 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-20 10:41:19,551 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-20 10:41:19,551 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-20 10:41:19,552 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 10:41:19,552 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 10:41:19,552 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-20 10:41:19,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 10:41:19,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 10:41:19,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 10:41:19,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 10:41:19,553 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-20 10:41:19,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 10:41:19,554 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-20 10:41:19,554 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-20 10:41:19,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 10:41:19,555 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-20 10:41:19,555 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-20 10:41:19,555 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-20 10:41:19,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 10:41:19,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 10:41:19,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 10:41:20,652 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 10:41:20,652 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-20 10:41:20,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:41:20 BoogieIcfgContainer [2020-07-20 10:41:20,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 10:41:20,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 10:41:20,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 10:41:20,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 10:41:20,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:41:18" (1/3) ... [2020-07-20 10:41:20,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2018cb66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:41:20, skipping insertion in model container [2020-07-20 10:41:20,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:41:19" (2/3) ... [2020-07-20 10:41:20,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2018cb66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:41:20, skipping insertion in model container [2020-07-20 10:41:20,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:41:20" (3/3) ... [2020-07-20 10:41:20,665 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product33.cil.c [2020-07-20 10:41:20,675 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 10:41:20,683 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 10:41:20,697 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 10:41:20,720 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 10:41:20,721 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 10:41:20,721 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 10:41:20,721 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 10:41:20,721 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 10:41:20,721 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 10:41:20,722 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 10:41:20,722 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 10:41:20,745 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states. [2020-07-20 10:41:20,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-20 10:41:20,755 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:41:20,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:41:20,756 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:41:20,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:41:20,763 INFO L82 PathProgramCache]: Analyzing trace with hash -884456721, now seen corresponding path program 1 times [2020-07-20 10:41:20,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:41:20,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585898116] [2020-07-20 10:41:20,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:21,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:41:21,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 10:41:21,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:41:21,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:41:21,111 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:41:21,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585898116] [2020-07-20 10:41:21,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:41:21,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 10:41:21,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528905051] [2020-07-20 10:41:21,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 10:41:21,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:41:21,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 10:41:21,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 10:41:21,137 INFO L87 Difference]: Start difference. First operand 156 states. Second operand 2 states. [2020-07-20 10:41:21,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:41:21,179 INFO L93 Difference]: Finished difference Result 216 states and 271 transitions. [2020-07-20 10:41:21,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 10:41:21,180 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 51 [2020-07-20 10:41:21,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:41:21,192 INFO L225 Difference]: With dead ends: 216 [2020-07-20 10:41:21,192 INFO L226 Difference]: Without dead ends: 110 [2020-07-20 10:41:21,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 10:41:21,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-07-20 10:41:21,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-07-20 10:41:21,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-07-20 10:41:21,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 129 transitions. [2020-07-20 10:41:21,250 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 129 transitions. Word has length 51 [2020-07-20 10:41:21,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:41:21,251 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 129 transitions. [2020-07-20 10:41:21,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 10:41:21,251 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 129 transitions. [2020-07-20 10:41:21,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-20 10:41:21,255 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:41:21,255 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:41:21,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:21,471 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:41:21,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:41:21,472 INFO L82 PathProgramCache]: Analyzing trace with hash -101366549, now seen corresponding path program 1 times [2020-07-20 10:41:21,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:41:21,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417466100] [2020-07-20 10:41:21,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:21,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:41:21,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 10:41:21,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:41:21,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:41:21,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:41:21,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417466100] [2020-07-20 10:41:21,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:41:21,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 10:41:21,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58154212] [2020-07-20 10:41:21,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 10:41:21,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:41:21,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 10:41:21,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:41:21,765 INFO L87 Difference]: Start difference. First operand 110 states and 129 transitions. Second operand 3 states. [2020-07-20 10:41:21,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:41:21,809 INFO L93 Difference]: Finished difference Result 192 states and 233 transitions. [2020-07-20 10:41:21,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 10:41:21,810 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-07-20 10:41:21,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:41:21,813 INFO L225 Difference]: With dead ends: 192 [2020-07-20 10:41:21,813 INFO L226 Difference]: Without dead ends: 110 [2020-07-20 10:41:21,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:41:21,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-07-20 10:41:21,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-07-20 10:41:21,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-07-20 10:41:21,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 128 transitions. [2020-07-20 10:41:21,830 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 128 transitions. Word has length 52 [2020-07-20 10:41:21,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:41:21,831 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 128 transitions. [2020-07-20 10:41:21,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 10:41:21,831 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 128 transitions. [2020-07-20 10:41:21,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-07-20 10:41:21,833 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:41:21,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:41:22,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:22,047 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:41:22,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:41:22,047 INFO L82 PathProgramCache]: Analyzing trace with hash -56948144, now seen corresponding path program 1 times [2020-07-20 10:41:22,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:41:22,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112428489] [2020-07-20 10:41:22,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:22,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:41:22,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 10:41:22,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:41:22,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:41:22,287 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:41:22,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112428489] [2020-07-20 10:41:22,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:41:22,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 10:41:22,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267144198] [2020-07-20 10:41:22,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 10:41:22,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:41:22,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 10:41:22,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:41:22,290 INFO L87 Difference]: Start difference. First operand 110 states and 128 transitions. Second operand 3 states. [2020-07-20 10:41:22,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:41:22,314 INFO L93 Difference]: Finished difference Result 165 states and 191 transitions. [2020-07-20 10:41:22,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 10:41:22,315 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-07-20 10:41:22,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:41:22,317 INFO L225 Difference]: With dead ends: 165 [2020-07-20 10:41:22,317 INFO L226 Difference]: Without dead ends: 101 [2020-07-20 10:41:22,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:41:22,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-07-20 10:41:22,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2020-07-20 10:41:22,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-07-20 10:41:22,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 116 transitions. [2020-07-20 10:41:22,330 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 116 transitions. Word has length 60 [2020-07-20 10:41:22,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:41:22,331 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 116 transitions. [2020-07-20 10:41:22,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 10:41:22,331 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 116 transitions. [2020-07-20 10:41:22,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-07-20 10:41:22,333 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:41:22,333 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:41:22,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:22,547 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:41:22,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:41:22,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1251165603, now seen corresponding path program 1 times [2020-07-20 10:41:22,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:41:22,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490898126] [2020-07-20 10:41:22,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:41:22,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-20 10:41:22,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:41:22,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:41:22,754 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:41:22,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490898126] [2020-07-20 10:41:22,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:41:22,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 10:41:22,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155211380] [2020-07-20 10:41:22,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 10:41:22,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:41:22,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 10:41:22,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:41:22,756 INFO L87 Difference]: Start difference. First operand 101 states and 116 transitions. Second operand 3 states. [2020-07-20 10:41:22,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:41:22,809 INFO L93 Difference]: Finished difference Result 174 states and 208 transitions. [2020-07-20 10:41:22,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 10:41:22,810 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-07-20 10:41:22,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:41:22,814 INFO L225 Difference]: With dead ends: 174 [2020-07-20 10:41:22,814 INFO L226 Difference]: Without dead ends: 171 [2020-07-20 10:41:22,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:41:22,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-07-20 10:41:22,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-07-20 10:41:22,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-07-20 10:41:22,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 205 transitions. [2020-07-20 10:41:22,837 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 205 transitions. Word has length 64 [2020-07-20 10:41:22,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:41:22,837 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 205 transitions. [2020-07-20 10:41:22,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 10:41:22,838 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 205 transitions. [2020-07-20 10:41:22,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-07-20 10:41:22,840 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:41:22,840 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:41:23,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:23,055 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:41:23,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:41:23,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1377377934, now seen corresponding path program 1 times [2020-07-20 10:41:23,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:41:23,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [71381785] [2020-07-20 10:41:23,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:41:23,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-20 10:41:23,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:41:23,360 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-20 10:41:23,360 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:41:23,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [71381785] [2020-07-20 10:41:23,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:41:23,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 10:41:23,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801931569] [2020-07-20 10:41:23,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 10:41:23,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:41:23,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 10:41:23,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-07-20 10:41:23,364 INFO L87 Difference]: Start difference. First operand 171 states and 205 transitions. Second operand 7 states. [2020-07-20 10:41:23,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:41:23,948 INFO L93 Difference]: Finished difference Result 407 states and 526 transitions. [2020-07-20 10:41:23,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 10:41:23,949 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 102 [2020-07-20 10:41:23,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:41:23,953 INFO L225 Difference]: With dead ends: 407 [2020-07-20 10:41:23,953 INFO L226 Difference]: Without dead ends: 264 [2020-07-20 10:41:23,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-07-20 10:41:23,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-07-20 10:41:24,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 234. [2020-07-20 10:41:24,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-07-20 10:41:24,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 287 transitions. [2020-07-20 10:41:24,011 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 287 transitions. Word has length 102 [2020-07-20 10:41:24,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:41:24,012 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 287 transitions. [2020-07-20 10:41:24,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 10:41:24,012 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 287 transitions. [2020-07-20 10:41:24,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-07-20 10:41:24,014 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:41:24,015 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:41:24,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:24,230 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:41:24,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:41:24,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1318571987, now seen corresponding path program 1 times [2020-07-20 10:41:24,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:41:24,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940908010] [2020-07-20 10:41:24,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:24,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:41:24,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 833 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-20 10:41:24,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:41:24,470 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-07-20 10:41:24,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 10:41:24,636 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-20 10:41:24,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940908010] [2020-07-20 10:41:24,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-20 10:41:24,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2020-07-20 10:41:24,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865887486] [2020-07-20 10:41:24,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 10:41:24,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:41:24,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 10:41:24,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 10:41:24,639 INFO L87 Difference]: Start difference. First operand 234 states and 287 transitions. Second operand 6 states. [2020-07-20 10:41:24,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:41:24,833 INFO L93 Difference]: Finished difference Result 609 states and 785 transitions. [2020-07-20 10:41:24,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 10:41:24,833 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2020-07-20 10:41:24,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:41:24,837 INFO L225 Difference]: With dead ends: 609 [2020-07-20 10:41:24,838 INFO L226 Difference]: Without dead ends: 403 [2020-07-20 10:41:24,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 237 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-07-20 10:41:24,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-07-20 10:41:24,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 343. [2020-07-20 10:41:24,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-07-20 10:41:24,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 419 transitions. [2020-07-20 10:41:24,870 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 419 transitions. Word has length 121 [2020-07-20 10:41:24,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:41:24,871 INFO L479 AbstractCegarLoop]: Abstraction has 343 states and 419 transitions. [2020-07-20 10:41:24,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 10:41:24,871 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 419 transitions. [2020-07-20 10:41:24,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-07-20 10:41:24,873 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:41:24,874 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:41:25,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:25,087 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:41:25,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:41:25,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1349431287, now seen corresponding path program 1 times [2020-07-20 10:41:25,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:41:25,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662423710] [2020-07-20 10:41:25,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:25,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:41:25,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 843 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 10:41:25,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:41:25,337 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-20 10:41:25,338 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:41:25,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662423710] [2020-07-20 10:41:25,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:41:25,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 10:41:25,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523175260] [2020-07-20 10:41:25,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 10:41:25,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:41:25,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 10:41:25,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 10:41:25,340 INFO L87 Difference]: Start difference. First operand 343 states and 419 transitions. Second operand 6 states. [2020-07-20 10:41:25,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:41:25,388 INFO L93 Difference]: Finished difference Result 673 states and 842 transitions. [2020-07-20 10:41:25,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 10:41:25,388 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2020-07-20 10:41:25,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:41:25,391 INFO L225 Difference]: With dead ends: 673 [2020-07-20 10:41:25,391 INFO L226 Difference]: Without dead ends: 358 [2020-07-20 10:41:25,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 10:41:25,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-07-20 10:41:25,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2020-07-20 10:41:25,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-07-20 10:41:25,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 434 transitions. [2020-07-20 10:41:25,417 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 434 transitions. Word has length 125 [2020-07-20 10:41:25,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:41:25,418 INFO L479 AbstractCegarLoop]: Abstraction has 358 states and 434 transitions. [2020-07-20 10:41:25,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 10:41:25,418 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 434 transitions. [2020-07-20 10:41:25,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-07-20 10:41:25,420 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:41:25,420 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:41:25,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:25,634 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:41:25,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:41:25,635 INFO L82 PathProgramCache]: Analyzing trace with hash 382080633, now seen corresponding path program 1 times [2020-07-20 10:41:25,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:41:25,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [29704191] [2020-07-20 10:41:25,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:41:25,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 10:41:25,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:41:25,837 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-20 10:41:25,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:41:25,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [29704191] [2020-07-20 10:41:25,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:41:25,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 10:41:25,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052372361] [2020-07-20 10:41:25,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 10:41:25,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:41:25,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 10:41:25,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 10:41:25,840 INFO L87 Difference]: Start difference. First operand 358 states and 434 transitions. Second operand 5 states. [2020-07-20 10:41:25,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:41:25,872 INFO L93 Difference]: Finished difference Result 709 states and 892 transitions. [2020-07-20 10:41:25,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 10:41:25,872 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-07-20 10:41:25,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:41:25,875 INFO L225 Difference]: With dead ends: 709 [2020-07-20 10:41:25,876 INFO L226 Difference]: Without dead ends: 379 [2020-07-20 10:41:25,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 10:41:25,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2020-07-20 10:41:25,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 370. [2020-07-20 10:41:25,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2020-07-20 10:41:25,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 446 transitions. [2020-07-20 10:41:25,900 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 446 transitions. Word has length 125 [2020-07-20 10:41:25,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:41:25,901 INFO L479 AbstractCegarLoop]: Abstraction has 370 states and 446 transitions. [2020-07-20 10:41:25,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 10:41:25,901 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 446 transitions. [2020-07-20 10:41:25,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-07-20 10:41:25,904 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:41:25,904 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:41:26,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:26,118 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:41:26,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:41:26,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1249132858, now seen corresponding path program 1 times [2020-07-20 10:41:26,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:41:26,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925106635] [2020-07-20 10:41:26,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:26,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:41:26,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 10:41:26,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:41:26,380 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:41:26,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:41:26,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925106635] [2020-07-20 10:41:26,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:41:26,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 10:41:26,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311500009] [2020-07-20 10:41:26,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 10:41:26,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:41:26,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 10:41:26,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 10:41:26,383 INFO L87 Difference]: Start difference. First operand 370 states and 446 transitions. Second operand 6 states. [2020-07-20 10:41:27,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:41:27,099 INFO L93 Difference]: Finished difference Result 1164 states and 1580 transitions. [2020-07-20 10:41:27,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 10:41:27,099 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2020-07-20 10:41:27,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:41:27,105 INFO L225 Difference]: With dead ends: 1164 [2020-07-20 10:41:27,106 INFO L226 Difference]: Without dead ends: 822 [2020-07-20 10:41:27,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-20 10:41:27,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2020-07-20 10:41:27,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 792. [2020-07-20 10:41:27,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 792 states. [2020-07-20 10:41:27,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1014 transitions. [2020-07-20 10:41:27,169 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1014 transitions. Word has length 125 [2020-07-20 10:41:27,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:41:27,170 INFO L479 AbstractCegarLoop]: Abstraction has 792 states and 1014 transitions. [2020-07-20 10:41:27,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 10:41:27,170 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1014 transitions. [2020-07-20 10:41:27,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-07-20 10:41:27,175 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:41:27,175 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:41:27,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:27,390 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:41:27,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:41:27,390 INFO L82 PathProgramCache]: Analyzing trace with hash -2007066912, now seen corresponding path program 1 times [2020-07-20 10:41:27,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:41:27,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30536172] [2020-07-20 10:41:27,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:27,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 10:41:27,711 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 10:41:27,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 10:41:27,832 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 10:41:28,201 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 10:41:28,201 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 10:41:28,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:28,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 10:41:28 BoogieIcfgContainer [2020-07-20 10:41:28,631 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 10:41:28,634 INFO L168 Benchmark]: Toolchain (without parser) took 9942.42 ms. Allocated memory was 136.8 MB in the beginning and 335.0 MB in the end (delta: 198.2 MB). Free memory was 100.7 MB in the beginning and 229.7 MB in the end (delta: -129.0 MB). Peak memory consumption was 69.1 MB. Max. memory is 7.1 GB. [2020-07-20 10:41:28,635 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 136.8 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-20 10:41:28,636 INFO L168 Benchmark]: CACSL2BoogieTranslator took 666.10 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 100.2 MB in the beginning and 168.4 MB in the end (delta: -68.2 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2020-07-20 10:41:28,637 INFO L168 Benchmark]: Boogie Preprocessor took 101.48 ms. Allocated memory is still 200.3 MB. Free memory was 168.4 MB in the beginning and 164.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-07-20 10:41:28,637 INFO L168 Benchmark]: RCFGBuilder took 1195.56 ms. Allocated memory was 200.3 MB in the beginning and 230.7 MB in the end (delta: 30.4 MB). Free memory was 164.2 MB in the beginning and 197.1 MB in the end (delta: -32.9 MB). Peak memory consumption was 86.4 MB. Max. memory is 7.1 GB. [2020-07-20 10:41:28,638 INFO L168 Benchmark]: TraceAbstraction took 7972.90 ms. Allocated memory was 230.7 MB in the beginning and 335.0 MB in the end (delta: 104.3 MB). Free memory was 195.6 MB in the beginning and 229.7 MB in the end (delta: -34.1 MB). Peak memory consumption was 70.2 MB. Max. memory is 7.1 GB. [2020-07-20 10:41:28,642 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 136.8 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 666.10 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 100.2 MB in the beginning and 168.4 MB in the end (delta: -68.2 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 101.48 ms. Allocated memory is still 200.3 MB. Free memory was 168.4 MB in the beginning and 164.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1195.56 ms. Allocated memory was 200.3 MB in the beginning and 230.7 MB in the end (delta: 30.4 MB). Free memory was 164.2 MB in the beginning and 197.1 MB in the end (delta: -32.9 MB). Peak memory consumption was 86.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7972.90 ms. Allocated memory was 230.7 MB in the beginning and 335.0 MB in the end (delta: 104.3 MB). Free memory was 195.6 MB in the beginning and 229.7 MB in the end (delta: -34.1 MB). Peak memory consumption was 70.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 284]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L85] int waterLevel = 1; [L86] int methaneLevelCritical = 0; [L179] int cleanupTimeShifts = 4; [L292] int pumpRunning = 0; [L293] int systemActive = 1; [L679] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L876] int methAndRunningLastTime ; VAL [\old(cleanupTimeShifts)=72, \old(head)=23, \old(head)=65, \old(methAndRunningLastTime)=43, \old(methaneLevelCritical)=31, \old(pumpRunning)=51, \old(systemActive)=85, \old(waterLevel)=66, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L257] int retValue_acc ; [L258] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L262] FCALL select_helpers() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L263] FCALL select_features() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L264] CALL, EXPR valid_product() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L264] RET, EXPR valid_product() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L264] tmp = valid_product() [L266] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L268] FCALL setup() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L269] CALL runTest() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L250] CALL __utac_acc__Specification2_spec__1() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L881] methAndRunningLastTime = 0 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L250] RET __utac_acc__Specification2_spec__1() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L251] CALL test() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L446] int splverifierCounter ; [L447] int tmp ; [L448] int tmp___0 ; [L449] int tmp___1 ; [L450] int tmp___2 ; [L453] splverifierCounter = 0 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L455] COND TRUE 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L457] COND TRUE splverifierCounter < 4 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L463] tmp = __VERIFIER_nondet_int() [L465] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L467] CALL waterRise() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L103] COND TRUE waterLevel < 2 [L104] waterLevel = waterLevel + 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L467] RET waterRise() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L473] tmp___0 = __VERIFIER_nondet_int() [L475] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L477] CALL changeMethaneLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L115] COND FALSE !(\read(methaneLevelCritical)) [L118] methaneLevelCritical = 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L477] RET changeMethaneLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L483] tmp___2 = __VERIFIER_nondet_int() [L485] COND TRUE \read(tmp___2) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___2=1, waterLevel=2] [L498] CALL timeShift() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L300] COND FALSE !(\read(pumpRunning)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L307] COND TRUE \read(systemActive) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L309] CALL processEnvironment() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L329] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L332] COND TRUE ! pumpRunning VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L334] CALL, EXPR isHighWaterLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L426] int retValue_acc ; [L427] int tmp ; [L428] int tmp___0 ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L432] CALL, EXPR isHighWaterSensorDry() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L165] int retValue_acc ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L168] COND FALSE !(waterLevel < 2) [L172] retValue_acc = 0 [L173] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L432] RET, EXPR isHighWaterSensorDry() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L432] tmp = isHighWaterSensorDry() [L434] COND FALSE !(\read(tmp)) [L437] tmp___0 = 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L439] retValue_acc = tmp___0 [L440] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L334] RET, EXPR isHighWaterLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L334] tmp = isHighWaterLevel() [L336] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L338] CALL activatePump() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L357] pumpRunning = 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L338] RET activatePump() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L309] RET processEnvironment() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L315] CALL __utac_acc__Specification2_spec__2() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L886] int tmp ; [L887] int tmp___0 ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L891] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L124] int retValue_acc ; [L127] retValue_acc = methaneLevelCritical [L128] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L891] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L891] tmp = isMethaneLevelCritical() [L893] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L895] CALL, EXPR isPumpRunning() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L381] int retValue_acc ; [L384] retValue_acc = pumpRunning [L385] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L895] RET, EXPR isPumpRunning() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L895] tmp___0 = isPumpRunning() [L897] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L898] COND FALSE !(\read(methAndRunningLastTime)) [L903] methAndRunningLastTime = 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L315] RET __utac_acc__Specification2_spec__2() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L498] RET timeShift() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___2=1, waterLevel=2] [L455] COND TRUE 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___2=1, waterLevel=2] [L457] COND TRUE splverifierCounter < 4 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___2=1, waterLevel=2] [L463] tmp = __VERIFIER_nondet_int() [L465] COND FALSE !(\read(tmp)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___2=1, waterLevel=2] [L473] tmp___0 = __VERIFIER_nondet_int() [L475] COND FALSE !(\read(tmp___0)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=2] [L483] tmp___2 = __VERIFIER_nondet_int() [L485] COND TRUE \read(tmp___2) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=2] [L498] CALL timeShift() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L300] COND TRUE \read(pumpRunning) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L302] CALL lowerWaterLevel() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L91] COND TRUE waterLevel > 0 [L92] waterLevel = waterLevel - 1 VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L302] RET lowerWaterLevel() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L307] COND TRUE \read(systemActive) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L309] CALL processEnvironment() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L329] int tmp ; VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L332] COND FALSE !(! pumpRunning) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L347] FCALL processEnvironment__wrappee__base() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L309] RET processEnvironment() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L315] CALL __utac_acc__Specification2_spec__2() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L886] int tmp ; [L887] int tmp___0 ; VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L891] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L124] int retValue_acc ; [L127] retValue_acc = methaneLevelCritical [L128] return (retValue_acc); VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L891] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L891] tmp = isMethaneLevelCritical() [L893] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L895] CALL, EXPR isPumpRunning() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L381] int retValue_acc ; [L384] retValue_acc = pumpRunning [L385] return (retValue_acc); VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L895] RET, EXPR isPumpRunning() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L895] tmp___0 = isPumpRunning() [L897] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L898] COND TRUE \read(methAndRunningLastTime) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L900] CALL __automaton_fail() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L284] __VERIFIER_error() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 220 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.6s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1129 SDtfs, 605 SDslu, 1734 SDs, 0 SdLazy, 827 SolverSat, 209 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 952 GetRequests, 918 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=792occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 129 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 954 NumberOfCodeBlocks, 954 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 936 ConstructedInterpolants, 0 QuantifiedInterpolants, 172568 SizeOfPredicates, 20 NumberOfNonLiveVariables, 6876 ConjunctsInSsa, 84 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 187/189 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...